Spot welding clamp

Abstract

The spot welding clamp comprises a base, a lifting supporting structure, a machining table, a first movable seat structure, a second movable seat structure and a clamping and fixing structure, the lifting supporting structure is installed on the upper end face of the base, and the bottom of the machining table is fixedly connected with the top end of the lifting supporting structure; two sliding grooves are transversely formed in the upper end face of the machining table, the first movable seat structure is installed on the upper end face and one side of the machining table, the second movable seat structure is installed on the first movable seat structure, and the clamping and fixing structure is installed on the second movable seat structure. The spot welding device can be suitable for spot welding machining of various sheet metal parts of different sizes, time and labor are saved during adjustment, efficiency is high, manual movement adjustment is not needed, stability after adjustment is good, the clamping range is not prone to being changed due to accidental touch of workers, and overall practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field related to fixture equipment, in particular to a spot welding fixture. Background Art

[0002] A fixture is a device used to fix the object to be processed in the mechanical manufacturing process so that it occupies the correct position for construction or inspection. It is also called a clamp. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process in the process can be called a fixture. The application range of fixtures is extremely wide. For example, fixtures are needed in the spot welding process of sheet metal parts, as shown below.

[0003] After searching, the patent with authorization publication number CN219787137U discloses a sheet metal processing spot welding fixture, which relates to the field of fixture technology, including a first bottom rod and a second bottom rod, the tops of the first bottom rod and the second bottom rod are symmetrically installed with telescopic rods, the tops of the telescopic rods are installed with sliding rods, and the sliding rods are provided with two in total. The outer walls of the sliding rods are symmetrically and movably installed with sliding blocks, and the tops of the sliding blocks are installed with hollow rods. The hollow rods are provided with two in total, and one end of the hollow rods is provided with through holes, and the through holes penetrate the hollow rods. Extension rods are movably installed at both ends of the hollow rods, and the extension rods are embedded in the hollow rods through the through holes. A clamping device is installed at one end of the extension rods. The sheet metal processing spot welding fixture can be adjusted according to the width of the sheet metal during use through the arrangement of the hollow rod and the extension rod, so that sheet metal parts of different widths can be clamped, which greatly improves the practicality of the device, and is simple to operate, convenient and fast.

[0004] However, the above patent still has the following aspects that can be optimized:

[0005] Although the clamping range of the clamp can be adjusted to facilitate spot welding processing of sheet metal parts of various sizes, the clamp is adjusted manually, which makes the adjustment operation time-consuming and labor-intensive, and the efficiency is low. In addition, since there is no locking mechanism after adjustment, the overall stability of the clamp is poor. The clamping range of the clamp is easily changed after the staff accidentally touches it, and it needs to be readjusted. Therefore, its structure needs to be improved and its practicality needs to be improved. Utility Model Content

[0006] The purpose of the utility model is to provide a spot welding clamp to solve the problem that although the above-mentioned patent can adjust the clamping range of the clamp to facilitate the spot welding processing of sheet metal parts of various sizes, the clamp is adjusted manually, which leads to time-consuming and labor-intensive adjustment operation and low efficiency. In addition, since there is no locking mechanism after adjustment, the overall stability of the clamp is poor, and the clamping range of the clamp is easily changed after the staff accidentally touches it, and readjustment is required. Therefore, its structure needs to be improved and its practicality needs to be improved.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spot welding fixture, comprising a base, a lifting support structure, a processing table, a first movable seat structure, a second movable seat structure and a clamping and fixing structure, the lifting support structure is installed at the upper end surface of the base, the bottom of the processing table is fixedly connected to the top of the lifting support structure, two slide grooves are horizontally opened at the upper end surface of the processing table, the first movable seat structure is installed on the upper end surface and one side of the processing table, the second movable seat structure is installed at the first movable seat structure, and the clamping and fixing structure is installed at the second movable seat structure.

[0008] Preferably, the lifting support structure includes a telescopic support column and a cylinder. The telescopic support column is provided in plurality. The plurality of telescopic support columns are fixedly mounted on the upper end surface of the base, and the plurality of telescopic support columns are respectively close to the four inner corners of the base. The cylinder is fixedly mounted at the center position of the upper end surface of the base, and the bottom of the processing table is fixedly connected to the telescopic ends of the plurality of telescopic support columns and the telescopic end of the cylinder.

[0009] Preferably, the first movable seat structure includes a movable plate, a screw rod and a brake motor, and two movable plates are provided. The bottoms of the two movable plates are slidably connected to the two slide grooves through multiple sliding connectors. The screw rod is rotatably installed on the upper end surface of the base through two bearing seats. The outside of the screw rod is provided with two threaded portions with opposite thread directions. The two threaded portions of the screw rod are each screwed with a slider, and the two sliders are symmetrically designed. The tops of the two sliders are respectively fixedly connected to the bottom center positions of the two movable plates. The brake motor is fixedly installed on one side of the processing table through a mounting member, and the output end of the brake motor is connected to one axial end of the screw rod.

[0010] Preferably, the second movable seat structure includes a bearing seat, a partition seat and a mounting plate, and two bearing seats and two partition seats are provided. The two bearing seats are respectively fixedly installed on the upper end surfaces of the two movable plates, and a mounting cavity is opened inside the bearing seat. The partition seat is fixedly installed in the middle position of the mounting cavity inside the bearing seat. Braking electric cylinders are fixedly installed on the front and rear sides of the partition seat, and the telescopic end of the brake electric cylinder passes through the mounting cavity and extends to the outside of the bearing seat. Four mounting plates are provided, and the mounting plates are L-shaped. One side of the four mounting plates is respectively fixedly connected to the telescopic ends of the four brake electric cylinders, and the L-shaped turning surfaces of the same group of two mounting plates are close to each other.

[0011] Preferably, a reinforcement plate is provided at an oblique angle at the L-shaped turning point of the mounting plate.

[0012] Preferably, the clamping and fixing structure includes a clamping plate and a clamping knob, and the clamping and fixing structure is provided with four groups. The four clamping plates are respectively installed at the bottom of the L-shaped turning surfaces of the four mounting plates through four groups of telescopic connecting rods, one end of the clamping knob passes through the top of the mounting plate by screwing, and the bottom end of the clamping knob is rotatably connected to the top of the clamping plate through a rotating connecting piece, and an anti-slip pad layer is fitted on the bottom surface of the clamping plate.

[0013] The utility model provides a spot welding fixture, which has the following beneficial effects:

[0014] The utility model is provided with a base, a lifting support structure, a processing table, a first movable seat structure, a second movable seat structure and a clamping and fixing structure. When working, according to the size requirements of the actual sheet metal parts, the lateral distance between the two bearing seats in the second movable seat structure can be first adjusted by the first movable seat structure, and then the longitudinal distance between the two clamping plates can be adjusted by the second movable seat structure. After the adjustment is completed, the sheet metal parts can be mounted on the two bearing seats, and the sheet metal parts can be clamped and fixed by the clamping and fixing structure in cooperation with the bearing seats, and the sheet metal parts can be spot-welded. Not only can it be suitable for spot-welding of sheet metal parts of various sizes, but the adjustment work is also time-saving and labor-saving, and the efficiency is high. There is no need for manual movement and adjustment, and the stability after adjustment is good, and the clamping range is not easily changed due to accidental contact by the staff. The overall practicality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the top view of the processing table of the utility model;

[0017] Figure 3 It is a schematic diagram of the side view of the dissected structure of the brake electric cylinder of the utility model;

[0018] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0019] In the figure: 1. base; 2. processing table; 3. slide; 4. telescopic support column; 5. cylinder; 6. movable plate; 7. screw; 8. brake motor; 9. slider; 10. bearing seat; 11. partition seat; 12. mounting plate; 13. mounting cavity; 14. brake cylinder; 15. reinforcement plate; 16. clamping plate; 17. clamping knob; 18. telescopic connecting rod; 19. anti-slip pad. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] like Figure 1-4 As shown, the utility model provides a technical solution: a spot welding fixture, including a base 1, a lifting support structure, a processing table 2, a first movable seat structure, a second movable seat structure and a clamping and fixing structure, the lifting support structure is installed at the upper end surface of the base 1, the bottom of the processing table 2 is fixedly connected to the top of the lifting support structure, two slide grooves 3 are horizontally opened on the upper end surface of the processing table 2, the first movable seat structure is installed on the upper end surface and one side of the processing table 2, the second movable seat structure is installed at the first movable seat structure, and the clamping and fixing structure is installed at the second movable seat structure.

[0022] The lifting support structure includes a telescopic support column 4 and a cylinder 5. The telescopic support column 4 is provided in plurality. The plurality of telescopic support columns 4 are fixedly mounted on the upper end surface of the base 1, and the plurality of telescopic support columns 4 are respectively close to the four inner corners of the base 1. The cylinder 5 is fixedly mounted at the center position of the upper end surface of the base 1. The bottom of the processing table 2 is fixedly connected with the telescopic ends of the plurality of telescopic support columns 4 and the telescopic ends of the cylinder 5, so that the height of the processing table 2 can be adjusted by working with the plurality of telescopic support columns 4 through the cylinder 5, so as to facilitate the subsequent spot welding processing of sheet metal parts by workers of different heights.

[0023] The first movable seat structure includes a movable plate 6, a screw rod 7 and a brake motor 8. The movable plates 6 are provided with two, and the bottoms of the two movable plates 6 are slidably connected to the two slide grooves 3 through a plurality of sliding connectors. The screw rod 7 is rotatably installed on the upper end surface of the base 1 through two bearing seats. The outside of the screw rod 7 is provided with two threaded parts with opposite thread directions. The screw rod 7 is screwed with a slider 9 at each of its two threaded parts. The two sliders 9 are symmetrically designed. The tops of the two sliders 9 are respectively fixedly connected to the bottom center positions of the two movable plates 6. The brake motor 8 is fixedly installed on one side of the processing table 2 through a mounting piece, and the output end of the brake motor 8 is connected to one end of the shaft end of the screw rod 7, so that the screw rod 7 can be driven to rotate by the operation of the brake motor 8. Since the two sliders 9 cannot rotate, they can cooperate with the two slide grooves 3 to synchronously drive the two movable plates 6 to move closer to each other or move away from each other, so as to adjust the spacing between the two movable plates 6.

[0024] The second movable seat structure includes a bearing seat 10, a partition seat 11 and a mounting plate 12. The bearing seat 10 and the partition seat 11 are each provided with two, and the two bearing seats 10 are respectively fixedly installed on the upper end surfaces of the two movable plates 6. The bearing seat 10 is provided with a mounting cavity 13 inside, and the partition seat 11 is fixedly installed at the middle position of the mounting cavity 13 inside the bearing seat 10. Braking electric cylinders 14 are fixedly installed on the front and rear sides of the partition seat 11, and the telescopic end of the braking electric cylinder 14 extends to the outside of the bearing seat 10 through the mounting cavity 13. There are four mounting plates 12, and the mounting plates 12 are L-shaped. One side of the four mounting plates 12 is respectively fixedly connected to the telescopic ends of the four braking electric cylinders 14, and the L-shaped turning surfaces of the same group of two mounting plates 12 are close to each other, so that the four mounting plates 12 can be driven to move forward and backward by the telescopic movement of the four braking electric cylinders 14, thereby adjusting the distance between two longitudinally adjacent clamping plates 16;

[0025] A reinforcing plate 15 is provided at an oblique angle at the L-shaped turning point of the mounting plate 12, so that the mounting plate 12 has a higher stability;

[0026] The clamping and fixing structure includes a clamping plate 16 and a clamping knob 17. The clamping and fixing structure is provided with four groups. The four clamping plates 16 are respectively installed at the bottom of the L-shaped turning surface of the four mounting plates 12 through four groups of telescopic connecting rods 18. One end of the clamping knob 17 passes through the top of the mounting plate 12 by screwing, and the bottom end of the clamping knob 17 is rotatably connected to the top of the clamping plate 16 through a rotating connecting piece. The bottom surface of the clamping plate 16 is fitted with an anti-slip pad layer 19, so that the clamping plate 16 can be driven to move downward by rotating the clamping knob 17 and cooperating with the telescopic connecting rod 18 until the clamping plate 16 cooperates with the bearing seat 10 to clamp and fix the sheet metal.

[0027] Working principle: During operation, the brake motor 8 can be started in advance according to the size requirements of the sheet metal to be processed, and the screw rod 7 can be driven to rotate. Since the two sliders 9 cannot rotate, the two slide grooves 3 can be used to synchronously drive the two movable plates 6 to move closer to each other or move away from each other, and the distance between the two movable plates 6 can be adjusted, thereby adjusting the distance between the two bearing seats 10. After adjustment, the brake motor 8 is turned off, and the motor automatically locks the brake. Therefore, the distance between the two bearing seats 10 is stable enough and not easily changed by external forces. At this time, the four brakes can be started The electric cylinder 14 is extended and retracted to respectively drive the four mounting plates 12 to move longitudinally, thereby adjusting the distance between two longitudinally adjacent clamping plates 16. After the adjustment is completed, the brake electric cylinder 14 is closed, and the distance between two longitudinally adjacent clamping plates 16 is also sufficiently stable. At this time, the sheet metal part can be erected between the two bearing seats 10, and by turning the four clamping knobs 17 in sequence, in conjunction with the four sets of telescopic connecting rods 18, the four clamping plates 16 are driven to move downward until the four clamping plates 16 cooperate with the two bearing seats 10 to clamp and fix the sheet metal part, and then the sheet metal part can be spot welded.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spot welding fixture, comprising a base (1), a lifting support structure, a processing table (2), a first movable seat structure, a second movable seat structure and a clamping and fixing structure, characterized in that: The lifting support structure is installed on the upper end surface of the base (1), the bottom of the processing table (2) is fixedly connected to the top of the lifting support structure, two slide grooves (3) are transversely opened on the upper end surface of the processing table (2), the first movable seat structure is installed on the upper end surface and one side of the processing table (2), the second movable seat structure is installed on the first movable seat structure, and the clamping and fixing structure is installed on the second movable seat structure.

2. A spot welding fixture according to claim 1, characterized in that: The lifting support structure comprises a telescopic support column (4) and a cylinder (5). The telescopic support column (4) is provided in plurality. The plurality of telescopic support columns (4) are fixedly mounted on the upper end surface of the base (1), and the plurality of telescopic support columns (4) are respectively close to four inner corners of the base (1). The cylinder (5) is fixedly mounted at the center position of the upper end surface of the base (1). The bottom of the processing table (2) is fixedly connected to the telescopic ends of the plurality of telescopic support columns (4) and the telescopic ends of the cylinder (5).

3. A spot welding fixture according to claim 1, characterized in that: The first movable seat structure comprises a movable plate (6), a screw rod (7) and a brake motor (8). Two movable plates (6) are provided. The bottoms of the two movable plates (6) are slidably connected to the two slide grooves (3) through a plurality of sliding connectors. The screw rod (7) is rotatably mounted on the upper end surface of the base (1) through two bearing seats. The outside of the screw rod (7) is provided with two threaded portions with opposite thread directions. The screw rod (7) is provided with a slider (9) screwed at each of the two threaded portions. The two sliders (9) are symmetrically designed. The tops of the two sliders (9) are fixedly connected to the center positions of the bottoms of the two movable plates (6) respectively. The brake motor (8) is fixedly mounted on one side of the processing table (2) through a mounting member, and the output end of the brake motor (8) is connected to the shaft end of one end of the screw rod (7).

4. A spot welding fixture according to claim 1, characterized in that: The second movable seat structure comprises a bearing seat (10), a partition seat (11) and a mounting plate (12); two bearing seats (10) and two partition seats (11) are provided, and the two bearing seats (10) are respectively fixedly installed on the upper end surfaces of the two movable plates (6); a mounting cavity (13) is provided inside the bearing seat (10); the partition seat (11) is fixedly installed at the middle position of the mounting cavity (13) inside the bearing seat (10); brake electric cylinders (14) are fixedly installed on both the front and rear sides of the partition seat (11); the telescopic end of the brake electric cylinder (14) passes through the mounting cavity (13) and extends to the outside of the bearing seat (10); four mounting plates (12) are provided, and the mounting plates (12) are L-shaped; one side of the four mounting plates (12) is respectively fixedly connected to the telescopic ends of the four brake electric cylinders (14); and the L-shaped turning surfaces of the same group of two mounting plates (12) are close to each other.

5. A spot welding fixture according to claim 4, characterized in that: A reinforcing plate (15) is provided at an oblique angle at the L-shaped turning point of the mounting plate (12).

6. A spot welding fixture according to claim 1, characterized in that: The clamping and fixing structure comprises a clamping plate (16) and a clamping knob (17). The clamping and fixing structure is provided with four groups. The four clamping plates (16) are respectively installed at the bottom of the L-shaped turning surface of the four mounting plates (12) through four groups of telescopic connecting rods (18). One end of the clamping knob (17) penetrates the top of the mounting plate (12) by screwing, and the bottom end of the clamping knob (17) is rotatably connected to the top of the clamping plate (16) through a rotating connecting piece. The bottom surface of the clamping plate (16) is fitted with an anti-slip pad layer (19).

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